Recommend for Kindle version - http://amzn.to/snktFd
Amazon.com review
Having read the earlier review, I felt it necessary to chime in. The introduction, which I skipped, was lengthy, but there's a lot of information in the main text of the book- enough to warrant the price. It's as much a workbook as a text since there are suggested exercises to follow. There are also lots of pictures of examples which I found very helpful. Dow "wrote the book" on composition, and this is it!